Not resigning in a complete lost position

Today I was playing a 60+5 game against someone called Mehrdad95 and he got in a completely lost position only when clock was on 49 minutes. He left the game and I had to wait 50 minutes on the laptop for the game to be finished. It just doesn't seem correct to me to leave the game like that and waste someones time. Anyways it only shows what people do for the rating. Would be great if there was something to do against this. Have a good time.

If he left the game (ie, disconnected from the site), lichess normally would offer you draw or claim-victory options after a few minutes had elapsed.

In my experience lichess is very inconsistent in how this is actually done, however.